You and your EMT partner arrive at the residence of a 50-year-old man who complains of weakness. Your primary assessment reveals that he is critically ill and will require aggressive treatment. The closest hospital is 25 miles away. You should:
A. perform a detailed secondary assessment, assess his vital signs, and then transport rapidly.
B. administer oxygen via nonrebreathing mask and obtain as much of his medical history as possible.
C. load him into the ambulance, begin transport, and perform all treatment en route to the hospital.
D. manage all threats to airway, breathing, and circulation and consider requesting an ALS unit.